Metal-cutting machine.



A. S. PORTER.

METAL CUTTING MACHINE.

APPLICATION FILED DEC. 16, 1914.

Patented Feb. 22, 1916.

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. 1 iaiisnnrs. ronrnfa, onFI cHBUBG, MASSACHUSETTS.

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p p Applic'ati on fileiiDecember 16 1914 Serial 110.8773557/ To all whom concern:

Be it knownrthati AnsLnx-uS.

the following is a specification.

This inven cutting metal and is especially designed for roofers and other workers inxsheet metal.

acted onand feed it through the machine so as to produce a straight out, there'belng a gage combined with the machine and which is capable of'ready adjustment so as to insurecutting the metal to a proper widthi With the foregoing and other objects in view which will appear as the description proceeds, the invention resides'in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of theinvention herein disclosed, can be made \Wltllll'l the scope of what is claimed, without departing from the spirit ofthe invention.

In the accompanying drawings the preferred form of the invention has been shown. 1 i

In said draWings:Figure 1 is a vertical longitudinal section through the machine. Fig. 2 is a section on line A-B Fig. 1. Fig. 3 is a section on line CD .Fig. 1. Fig. 4 is an end elevation of the machine. Fig. 5 is an enlarged vertical transverse section through one of the bearings. Fig. 6 is a face view of one of the cutters. Referring to the figures by characters of reference 1 designates the base of the machine adapted to be bolted or otherwise secured upon a bench or the like and provided. at one end, with a post 2 having an integral arm 3 extending from the upper end thereof and parallel with the base 1. Standards 4 are integral with the base and support a table 5 which extends through the space between the base and the arm 3. This table 5 has'a longitudinal series of apertures 6 and one end of the table is cut u away as at 7 to receive the post'2 while Specification of Letters Patent. 1

I ME AIi-G TTING MAcrriNn.

P c s-tea Feb. "senate.

. ,1 t the feed :rollers hereinafter referred to.

PO TER, i a. citizen of the United States residingsatfl Fitchburg, in the countyof'VVorcester and State. of Massachusetts,- have invented a new and useful Metal-CuttingMachine, of which Journaled Within and extending longitudi nally of the base l is a' shaft 9 to one end portion of which is secured a feed roll 10 its outer face. Secured tothis extension a 1 is a cutting disk12 preferably held in place tlon lrelates: t machines for by ineans of several screws 13 projecting into the extension. The cutting edge of j this disk 12 projects 'abovefthe level of the One offthe objects of theinvention is to provide a durable and compact machine-of this'chara'cter which can be readily attached to any work bench and, whilei operated by hand,- will positivelygrip the; metal being table 5. .That end of shaft 9- remote from theroll 10 is provided-witha gear-Z13 and with a crank arm 14 or :the like. This crank arm constitutes means whereby the mechanism is operated. GearlS constantly arm 8 andthe upper end ofpost 2. a Each" endof the arm isrprovided. with a guideway 18 in whicha bearingboxll) is slidably mounted, each bearing box being yieldingly supported, as by means of a spring 20 housed within the structure. Screws 21 are provided for engaging the upper ends of the boxes 19 for the purpose of adjusting them downwardly against the springs 20, thus to lower shaft 16. The teeth on the gears .13 and 15 are so shaped and proportioned as to permit a limited amount of movement of gear 15 toward and from gear 13 without disengaging the teeth.

That end of shaft 16 remote from gear 15 is provided with a feed roll 22 preferably faced with leather such as shown at 23.

Securedto the outer side of this roll 22 is a cutting disk 24 designed to project between said roll and the inner face of the disk 12 and to fit snugly against the disk.

The table 5 extends close to the disk 24 extended into anyone of the apertures 6. 4

The gage strip 26 has fingers 29 designed to overhang the near edge of the material becut is placed on the table and against strip 26 and is pressed between the rolls 10 and 2 2. The leather facing of the roll 22 will yield to permit the material to be properly received between the rolls and said rolls will thus grip upon the material and, as shaft 9 is rotated, the said rolls will force thematerial across the table 5 and feed it properly to the disks 12 and 24. These disks will shear the material along a straight line, the gage strip 26 properly'guiding the material during the operation of cutting.

Importance is attached to the fact that the disks l2 and 24: can be removed readily from the rolls for the purpose of sharponing or replacing them, and to the furtherfact that the rolls 22 and 10 can be quickly adjusted toward or from each other simply by manipulating the screws 21.

The entire structure is very simple, durable and compact and can be applied readily' to an ordinary work bench so as thus to be especially designed for use by roofers and :the like.

What is claimed is :-V

A metal cutting machine including a base, a post at one side thereof, a tubular arm extending laterally from the upper end of the post and overhanging the base, a shaft;

journaled within the base and extending from one side to the 'otherthereof, bearing boxes movably mounted within the end portions ofthe arm, a shaft journaled within the boxes and shiftable radially ofthe arm,

said shaft extending through the arm, cooperating means upon the two shafts at one end for transmitting motion from one shaft I to the other, feed rolls connected to the shafts. at their other ends and close to the base and the endof the arm respectively, there belng a concentrlcboss extending outwardly from one of the rolls, a cutting disk secured to said boss, another cutting disk secured to theother roll and extending back 1 ANSLEY PORTER.

Witnesses: v a

ALVAH M. LEVY, BERTHA M. MOONEY.

Copies of this :patent may be obtained. for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

